secondary flow loss

例句：

1. 1. Theengineer calculated the secondary flow loss in thepipeline.
   工程师计算了管道中的二次流损失。
2. 2.The study found that the secondary flow losscould be reduced by using a more efficientfilter.
   研究发现，使用更高效的过滤器可以减少二次流损失。
3. 3. In this experiment, we observedthe secondary flow loss during the filling process.
   在这个实验中，我们观察到填充过程中的二次流损失。